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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

Unreleased

Added

  • Nothing.

Changed

  • Nothing.

Removed

  • Nothing.

Fixed

  • Nothing.

1.3.0 - 2022-08-28

Added

  • Added flag to relocate() allow short cutting in case of identical keys. #68
  • Added tested support for move-only and copy-only value objects. #56
  • Added custom bucket implementation (similar to std::unordered_set). This improves update performance by 5%-20%. #44
  • Added PhTree.relocate(old_key, new_key) and PhTree.relocate_if(old_key, new_key, predicate). This is a lot faster than using other methods. #43
  • Added try_emplace(key, value) and try_emplace(iter_hint, key, value) #40
  • Added FilterBoxAABB and FilterSphereAABB as examples for filtering a PH-Tree with box keys #33

Changed

  • Moved tests and benchmarks into separate folders. #67

  • Cleaned up unit tests. #54

  • Simplified internals of erase(). #47

  • Removed internal use of std::optional() to slightly reduce memory overhead #38

  • Removed restrictions on bazel version #35

  • API BREAKING CHANGE: API of filters have been changed to be more correct, explicit and flexible. #21

    • Correctness: Converters and distance functions are not copied unnecessarily anymore.
    • Explicit: Filters must have a mandatory parameter for a converter reference. This ensures that the correct converter is used, probably tree.converter().
    • Flexible: Distance functions can be provided through a universal reference (forwarding reference). Also, filters are now movable and copyable.

  • API BREAKING CHANGE: Allow filtering on buckets in multimaps. Multimap filters have different functions and function signatures than normal PhTree filters. #26

Fixed

  • Fixed compiler warnings when compiling with Visual Studio 2019. #74
  • Fixed cmake to work with Visual Studio 2019. Added tests and benchmarks to cmake. (benchmarks still do not work with VS at the moment). #62
  • Fixed compilation problems and a memory leak when compiling with Visual Studio 2019. (also added msan support). #64

1.2.0 - 2022-04-14

Changed

  • Bugfix: FilterSphere was not working correctly. #27
  • Potentially BREAKING CHANGE: Refactored API of all methods that accept callbacks and filters to accept universal/forwarding references. Also changed filters and callback to not require const methods. #22
  • Clean up iterator implementations. #19
  • Make PhTree and PhTreeMultimap movable (move-assign/copy). #18
  • Potentially BREAKING CHANGE when using IsNodeValid() in provided filters: Changed bit_width_t from uin16_t to uint32_t. This improves performance of 3D insert/emplace on small datasets by up to 15%. To avoid warnings that meant that the API of FilterAABB and FilterSphere had to be changed to accept uint32_t instead of int. This may break some implementations. #17
  • DIM>8 now uses custom b_plus_tree_map instead of std::map. This improves performance for all operations, e.g. window queries on large datasets are up to 4x faster. Benchmarks results can be found in the issue. #14
  • postfix/infix field moved from Node to Entry. This avoids indirections and improves performance of most by ~10%. operations by 5-15%. #11
  • Entries now use 'union' to store children. #9
  • Avoid unnecessary find() when removing a node. #5
  • Avoid unnecessary key copy when inserting a node. #4
  • for_each(callback, filter) was traversing too many nodes. #2
  • Build improvements for bazel/cmake

1.1.1 - 2022-01-30

Changed

  • Replaced size() in filters with DIM #26

1.1.0 - 2022-01-25

Added

  • FilterSphere for filtering by sphere constraint (by ctbur) #16
  • IEEE converter for 32bit float, see distance.h (by ctbur) #18

Changed

  • Performance improvement for updates and queries: removed use of std::variant. #23
  • Fixed imports <climits> -> <limits> (by ctbur) #15
  • Cleaned up build scripts #21
  • Fixed warnings: #20
    • "unused function argument" warnings
    • gcc/clang warnings
    • MSVC warnings
    • reserved identifier warnings (identifiers starting with _)
  • typos in README.md #22

1.0.1 - 2021-05-06

Changed

  • replaced compilation flag -fpermissive with -Werror, and fixed all warnings/errors, see issue #10

1.0.0 - 2021-03-23

Added

  • API: MultiMap: A wrapper that makes PH-Tree behave as a multi-map.
  • API: erase(iterator)
  • API: emplace_hint(iterator, ...)
  • API for PhTreeF and PhTreeBoxF: 32bit floating point options
  • Support for custom key classes

Changed

  • BREAKING CHANGE: The query functions now require a query box as input (instead of a min/max point pair)
  • BREAKING CHANGE: phtree_box_d.h has been removed, please use `phtree.h instead.
  • BREAKING CHANGE: phtree_d.h has been removed, please use phtree.h instead.
  • BREAKING CHANGE: Data converters (IEEE, Multiply, etc) are now structs i.o. functions/functors
  • BREAKING CHANGE: PhFilterNoOp has been renamed to FilterNoOp
  • BREAKING CHANGE: kNN queries now always require the distance function to be specified.
  • BREAKING CHANGE: Preprocessors have been refactored and renamed to Converter/ScalarConverter
  • Moved CI builds from Travis to GitHub actions

Removed

  • Nothing.

Fixed

  • GCC warnings from -Wsign-compare and -Wsequence-point.

0.1.0 - 2020-07-02

Added

  • Initial version.

Changed

  • Nothing.

Removed

  • Nothing.

Fixed

  • Nothing.